Add something else small to get the subtotal just above $100, such as an 8-pack of pens or pencils for $1.

View the cart, and add code 70157.

Checkout, and final price will be about $86 with free shipping.

Good reviews and a good price for "active" noise-cancelling headphones.
Active means it takes a single AAA battery, and actively creates a noise to drown-out external noises, whether you are listening to music or not.